Self-dumping tub



(No Model.)

0. 1?. lLATTEMOOR.lv SELF DUMPING TUB. No. 297,609`. Y `PatentedApr. 29, 1884.

UNITED STATES PATENT f OFFICE.

CHARLES l?. LATTEMOOR, OF SOMERVILLE, MASSACHUSETTS.

SELF-DUMPING TUB.

SPECIFICATION forming part of Letters Patent No. 297,609, dated April 29, 1884.

Application filed February 29, i884. (No model.)

To all whom may concern.-

Beit known that I, CHARLES P. LATTEMOOR, l

of Somerville, in the county of Middlesex and State of Massachusetts, a citizen of the United States, have invented a `new and useful 'Improvement in Self-Dumping Tubs, of which the following is a full, clear, and'exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature, in which- Figure l represents in plan a portion of one side of a tub containing` my invention.

Fig. 2 is a plan view of the tub, representing` it as locked to the bail. Fig. 3 represents in side elevation the tub, also locked to the bail, and in dotted outline'its position in relation to the bail when tipped. Fig. 4 represents an enlarged view in elevation and in vertical section of a portion of the bail and of the locking device hereinafter described. Figs. 5 and 6 represent details of the locking device.-

The object of the invention is to obtain a cheap, simple, and effective device for so fastening or securing. the tub to the bail that it can easily be released and tilted or dumped in either direction, and it will also automatically lock itself to the bail upon its return to a horizontal position.

Referring to the drawings, A represents the tub, and a the bail. The bail is pivoted to the tub at a', and it is somewhat curved out from the sides of the tub to provide spacefor my attachment. I have attached to each'side of the tub a :flat plate, B, by means of bolts b, Each of these plates' carries or supports a pawl C, or locking-tooth, which is pivoted at c to the plate, and a spring, e', throws it outward and tends to keep it in contact with the bail.

These pawls or locking-teeth are arranged sok that one acts to prevent the tilting of the tub upon the bail in one direction and the other to prevent its tilting in the opposite direction. These pawls are held rigidly in place when the tub is not dumping by the lock or bolt D, which projects upward from the arm d through a hole, d', in the plate. This arm projects from the rod et, which also has an upward extension, cl3, through another hole inthe plate B, by which it isv steadied, and its lower end, di, is bent into a recess, d5, in the side of the tub, carrying a plate, d6, through a hole in which the endd* extends, and a coiled spring, dl, about the lower section of the-arm elevates automatically the rod, and consequently the bolt D. Each bolt is moved downward to disengage it from the pawl C by means of the arm E, which is pivoted at e to the bail, and which has the handle e, by which it is operated. This arm E bears on the curved rest or projections?, attached to the side of the roddz, when the tub islockedto the bail, andaspring, e, keeps it in contact therewith. Upon the downward movement of this arm the rod, and consequently the bolt D, is drawnV down from behind the pawl O, and upon the swinging back of the tub the curved rest rides under this arm, which has been returned to its original position by the spring c3. By making the rest curved and long I provide for the working of the unlatching-arm under all circumstances. The shoulder of the pawl is so shaped that upon the withdrawal of the bolt a slight movement ofthe tub will cause the bail to push it in sufficiently to permit the bail to clear it, when it automaticallyreturnsto its originalposition, but thetub, not being held by the pawl, will dump its contents 5 and upon its return movement the bail strikes theinclined side of the end of the pawl and pushes it back sufficiently to pass it, when the shoulder of the pawl immediately closes upon it and locks the bail, and is itself` locked at the same time. It is of course necessary that during the interval the bail is disengaged from the pawl the bolt D, which locks the pawl inplace at all other times, be held away from the pawl, so that it may be pushed back by the bail when the tub resumes its upright position, and at that instant it is necessary to release the bolt, in order that after the pawl has cleared thebail, and thereby locked it, it may itself be locked, and this result I accomplish by means of a latch, F, shaped substantially as shown in Figs. 2 and 3, pivoted atb to the plate B, and bearing such relation to the bail that upon the release of the pawl G by contact of the bail with the arm f it is shut over the end of the bolt D, or a projection thereof, which has been moved down to release the pawl, and holds it down until the tub has resumed its horizontal position, when the end f2 of the latch comes in contact with the pawl and moves the latch upon its pivot sufficiently to 'disen- IOO gage its end j'3 from the bolt, when the bolt is moved upward automatically by the spring di and locks the pawl C upon the bail.

It Will be observed that by positively arranging the two pa-Wls in the manner shown and described provision is obtained for dumping the tub in either direction, but that when the tub is dumped only one pawl needs to be released, and that the other pawl remains stationary and acts as a stop for preventing the tub from turning` in any but the right direction.

It will also be noticed that, While the two pawls are necessary for the purpose of permitting the tub to be dumped in either direction at will, only one pawl and its connec tions are used at one time, and that it is not essential that both pawls, with their attachments, be provided the tub at the same time, although it will be often desirable to do so.

The advantages of this construction arise mainly from its chcapness, simplicity, and effectivcness.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United Statesl. The combination of the dumping-tub A, having the bail a pivoted thereto, as described, the lockingpawls C, the bolts D, for locking the pawls in place, and the latches F, for holding the bolts depressed, operated by the bail, all substantially as and for the purposes described.

2. The combination of the dumping-tub A, having the bail a pivoted thereto, as described, the locking-pawl C, and pawl'locking bolt D, adapted to be moved to release the pawl C, all substantially as and for the purposes described.

3. The combination of the tub A, the bail a, pivoted thereto as described, the pawl C, pivoted as described, the bolt D, for locking the pawl, and the arm E, for depressing the bolt, all substantially as and for the purposes described.

4. The combination of the dumping-tub A, the baila, and pawl C, bolt D, and latch F, all substantially as and for the purposes described.

5. The combination' of the plate B, the pawl k C, pivoted thereto, the spring-actuated rod d, carrying the bolt D, and secured to the side of the tub, as described, the baila, unlatchingarm E, and the bolt-holding latch F, pivoted to the plate B, all substantially as and for the purposes described.

CHARLES P. LATTEMOOR.

Vitnesses: A F. F. RAYMOND, 2d,

FRED. B. DoLAN. 

